Tell your mom that you need shrimp for heart and brain health.
Shrimp have lots of taurine and lots of Omega-3 EFAs.
Taurine is an amino acid, a necessary nutrient. Any decent brand of cat food will supplement taurine, however some of it is destroyed by heat in the canning process. Cats have lost the ability to synthesize taurine. If they don't get enough from food they can suffer from Dilated Cardiomyopathy (DCM), a potentially deadly heart condition.
Omega-3 Essential Fatty Acids (EFA) are necessary for the healthy functioning of every system in the cat's body. EFAs are found in seafood and some plants such as flaxseed and avocados.
A shrimpie a day keeps the V-E-T away.